Ti-6Al-4V の機械的性質におよぼすβ域溶体化条件の影響

概要

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This paper is concerned with the relation between the mechanical properties and β-grain size on the β-region solution heat treatment and over aging of Ti-6Al-4V alloy. When the delayed time was less than 20s on the β-STOA, tensile and yield strength showed constant values regardless of grain size. Elongation and reduction of area decreased gradually until the β-grain size grew up about 0.8mm. They showed a tendency to be constant when the grain size was more about 0.8mm. When the time was over 20s and the β-grain size was less than about 0.8mm, tensile strength, yield strength, elongation and reduction of area had a tendency to be constant. On the other hand, when the grain size grew up about 0.8mm over, tensile and yield strength showed a tendency to decrease gradually. These elongation and reduction of area showed a tendency to increase gradually.
社団法人日本鉄鋼協会の論文
1992-02-01